methods.matreg: Extract the Model Coefficients and Variance-Covariance Matrix...

In wviechtb/metafor: Meta-Analysis Package for R

Extract the Model Coefficients and Variance-Covariance Matrix from 'matreg' Objects

Description

Methods for objects of class "matreg".

Usage

## S3 method for class 'matreg'
coef(object, ...)
## S3 method for class 'matreg'
vcov(object, ...)

Arguments

object	an object of class "matreg".
...	other arguments.

Details

The coef function extracts the estimated model coefficients from objects of class "matreg". The vcov function extracts the corresponding variance-covariance matrix.

Value

Either a vector with the estimated model coefficients or a variance-covariance matrix.

Author(s)

Wolfgang Viechtbauer ([e-mail], https://www.metafor-project.org).

References

Viechtbauer, W. (2010). Conducting meta-analyses in R with the metafor package. Journal of Statistical Software, 36(3), 1–48. ⁠https://doi.org/10.18637/jss.v036.i03⁠

See Also

matreg for the function to create matreg objects.

Examples

### fit a regression model with lm() to the 'mtcars' dataset
res <- lm(mpg ~ hp + wt + am, data=mtcars)
coef(res)
vcov(res)

### covariance matrix of the dataset
S <- cov(mtcars)

### fit the same regression model using matreg()
res <- matreg(y="mpg", x=c("hp","wt","am"), R=S, cov=TRUE,
              means=colMeans(mtcars), n=nrow(mtcars))
coef(res)
vcov(res)

wviechtb/metafor documentation built on Dec. 4, 2024, 1:03 a.m.